feat: add rabbit mutation to Mr_Lapin

[Zlorthishen]

Purpose of change (The Why)

When Rabbit Mutations were added to the game, they weren't added to the game's only Rabbit NPC

Describe the solution (The How)

I added them

Describe alternatives you've considered

Testing

Additional context

Checklist

Mandatory

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax like closes #1234 in Summary of the PR so it can be closed automatically.
• I've committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

[autofix-ci]

Autofix has formatted code style violation in this PR.

I edit commits locally (e.g: git, github desktop) and want to keep autofix

1. Run git pull. this will merge the automated commit into your local copy of the PR branch.
2. Continue working.

I do not want the automated commit

1. Format your code locally, then commit it.
2. Run git push --force to force push your branch. This will overwrite the automated commit on remote with your local one.
3. Continue working.

If you don't do this, your following commits will be based on the old commit, and cause MERGE CONFLICT.

[chaosvolt]

[scarf005]

please rename the title to be more descriptive. "lapin update" is ambiguous.